Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterAprilaire Vent Sanitizing: The Los Angeles Owner’s Guide
If your Aprilaire vent sanitizing system has stopped working, we can replace or repair it, typically for $220 to $480 installed depending on which Aprilaire series you have and what failed. We keep common Aprilaire vent sanitizer components stocked on our trucks, so most Los Angeles homes are back up and running the same visit. The most common way owners discover a problem: the little indicator light stops cycling, or a faint musty smell returns to the vents even though the rest of the system is clean.
Vent sanitizing units are different from whole-house filtration. They sit inside the ductwork and treat the air as it moves past. When they fail, they fail quietly. You won’t hear a bang or see smoke. You’ll just notice the air doesn’t smell as clean as it did, or the unit’s light never changes. Paul Adeyemi has pulled plenty of these out of Los Angeles ductwork over the years, and most failed units share the same few culprits: worn UV bulbs, failed ballasts, or mineral buildup from LA’s hard water if yours ties into a humidifier line.
Key Takeaways:
- Most Aprilaire vent sanitizing replacements in Los Angeles run $220 to $480 installed
- We stock common Aprilaire UV bulbs, ballasts, and compatible aftermarket equivalents on the truck
- The job usually takes under an hour once we’re at the home
- Written price before we start, every time, on every visit
Which Aprilaire Models This Applies To
Aprilaire has made vent sanitizing equipment under a few different names over the years, including the Aprilaire UV Sanitizer line and vent-mounted sanitizing modules that pair with their larger Model 5000 and Model 7000 whole-house air purifiers. If you’ve got a standalone UV module mounted in the supply plenum or a vent-line unit tied to your air handler, we can usually identify it by the label on the side of the housing. The model number is printed there, and that’s the single most helpful thing to have ready when you call.
Here’s the compatibility gotcha most Los Angeles owners run into: Aprilaire changed bulb sizes between series, and not every aftermarket bulb fits every housing. A UV bulb that matches a Model 2100 won’t necessarily seat properly in a Model 2200. It’s an easy mistake to make ordering online, and we’ve corrected it for plenty of homeowners who bought the wrong bulb and found out the hard way. If you’re not sure which series you have, don’t guess. Send us a photo of the label and we’ll match it before we ever roll a truck.
On the OEM versus aftermarket question: Aprilaire’s own bulbs and ballasts are well made, and for the UV bulb itself we typically recommend sticking with genuine Aprilaire. The aftermarket equivalents from third-party manufacturers are hit or miss on UV-C output, and a bulb that doesn’t produce the right wavelength is just a very expensive blue light. For ballasts and small electrical components, a quality aftermarket part from a brand like Honeywell is perfectly fine and often less expensive. We’re an independent service provider, not a factory Aprilaire dealer, so our only loyalty is to the part that works best for your home and budget. We also stock compatible vent sanitizing components for Lennox, Trane, and Carrier systems.
Signs Your Aprilaire Vent Sanitizing Is Failing
- The indicator light stopped changing or won’t come on at all. Aprilaire units use a light to tell you the system is cycling. If it’s dark or frozen, the bulb or ballast has likely reached the end of its life. UV bulbs wear out on a schedule, not when they “look” burned out.
- A faint stale or musty odor returns to the living space. The vent sanitizer’s whole job is to knock down microbial growth on the duct surfaces downstream of the unit. When it quiets down, the smell comes back slowly, usually within a few weeks.
- You opened the duct access panel and saw a dusty or hazy film on the bulb glass. UV-C light can’t penetrate a layer of dust. Los Angeles homes, especially anywhere near the 405 or the 10, pull in a lot of fine particulates, and a dirty bulb loses a big chunk of its effectiveness.
- Your energy bill ticked up without explanation. A failing fan or blower motor in the sanitizing module can draw more current before it dies entirely. It’s not the biggest cost driver on your bill, but a small unexplained bump is worth checking.
- The unit is humming or buzzing louder than it used to. That’s usually a ballast going bad. Ballasts fail more often in Los Angeles than in cooler climates because sustained heat cycles stress the internal capacitors.
Replacement Cost & What’s Included
For most Aprilaire vent sanitizing replacements in Los Angeles, you’re looking at:
- UV bulb replacement only: $220 to $300 installed
- Ballast replacement: $250 to $350 installed
- Full module replacement (bulb, ballast, housing if needed): $380 to $480 installed
The range depends on which series you have, whether any duct modifications are needed to seat a new housing, and whether your existing wiring is in good shape. Every quote includes the part, labor, and removal of the old component. We give you a written price before any work starts, and that’s the price you pay. No surprises, no “while we’re in there” upsell.
Every vent sanitizing replacement we do is covered by our 365-Day Done Right Promise. If it’s not right, we make it right. That’s part of the Cedarwell Care Promise on every single job, not a checkbox we offer when someone complains.
DIY or Call Us?
Here’s the honest split. What you can safely do: open the access panel, look at the bulb, and check whether it’s visibly darkened at the ends or hazy on the glass. You can also flip the breaker to the HVAC system and check that the wiring connections at the module are seated. Those are useful things to know before you call.
What you shouldn’t do: swap a UV bulb without shutting down the system, because UV-C light is dangerous to your eyes and skin at close range. The wiring inside the module carries line voltage, and touching the wrong terminal with live power is a genuine electrical hazard. And an incorrectly seated bulb will burn out prematurely, which turns a $220 job into a $400 job. We’ve seen all three happen. If you’re not certain about any part of it, call us at (323) 918-4345 and we’ll walk through what you’re seeing before you touch anything.
Before we start, let me show you exactly what we found and exactly what it will cost to fix it. That’s not a line we use in ads. It’s how we run every visit.
FAQs
In Los Angeles’s climate, a UV-C bulb on an Aprilaire vent sanitizer realistically lasts 9 to 12 months as an effective sanitizer, not the two years some packaging suggests. Heat and dust shorten the useful output window. After roughly a year, the bulb still glows but the UV-C output has decayed enough that we recommend replacing it.
Yes, and more often than not a repair is the right call. The most common failures are the bulb and ballast, both of which are replaceable components. The housing and wiring usually hold up fine. Unless the module is severely corroded or physically damaged, we repair, not replace. Call (323) 918-4345 and Paul or a technician will tell you honestly which way to go.
For most homes, under an hour from the time we start work. We bag the old bulb and ballast, seat the new parts, test the circuit, and verify the light cycles correctly. You’ll get a photo of the work area before we leave, same as every Morton’s job.
We keep common Aprilaire UV bulbs, ballasts, and Honeywell-compatible electrical components on our trucks. For less common series or full module replacements, we can usually have the part in hand within a few business days and schedule you right after that.
Usually they’re quoting a bulb-only price for a bulb that may not be a genuine Aprilaire part, or they’re planning to bill for labor and extra components once they arrive. We quote one installed price before we touch anything. What we quote is what you pay.
Talk to Us About Your Aprilaire System
If your Aprilaire vent sanitizing unit isn’t doing its job anymore, call Morton’s Air Duct Cleaning at (323) 918-4345. A live person answers, day or night. We’ll ask what you’re seeing, help you identify the model, and give you a written price before any work begins. We serve all of Los Angeles including Inglewood, Westchester, Culver City, Torrance, Long Beach, Pasadena, Glendale, Burbank, and the San Fernando Valley.
Written by Paul Adeyemi, Owner, Morton’s Air Duct Cleaning at Morton’s Air Duct Cleaning, serving Los Angeles and nearby areas.